Method and system for communicating video data in a packet-switched network, related network and computer program product therefor

• US 7,738,391 B2
• Filed: 05/10/2005
• Issued: 06/15/2010
• Est. Priority Date: 06/01/2004
• Status: Active Grant

• Current Assignee: STMicroelectronics SRL (STMicroelectronics NV)
• Original Assignee: STMicroelectronics SRL (STMicroelectronics NV)
• Inventors: Olivieri, Stefano, Melpignano, Diego
• Primary Examiner(s): JAIN, RAJ K
• Application Number:
  US11/126,063
• Publication Number:
  US 20050265383A1
• Time in Patent Office: 1,862 Days
• Field of Search: None
• US Class Current: 370/252
• CPC Class Codes: H04L 1/0014 by adapting the source coding
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0083 Formatting with frames or packets; Protocol or part of protocol for error control
• CPC Class Codes: H04L 1/16 in which the return channel carries supervisory signals, e.g. repetition request signals
• CPC Class Codes: H04N 19/174 the region being a slice, e.g. a line of blocks or a group of blocks
• CPC Class Codes: H04N 19/503 involving temporal prediction adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109
• CPC Class Codes: H04N 19/89 involving methods or arrangements for detection of transmission errors at the decoder
• CPC Class Codes: H04N 21/2343 involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements video transcoding H04N19/40; media packet handling at the source H04L65/762
• CPC Class Codes: H04N 21/2402 Monitoring of the downstream path of the transmission network, e.g. bandwidth available traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/44245 Monitoring the upstream path of the transmission network, e.g. its availability, bandwidth
• CPC Class Codes: H04N 21/6437 Real-time Transport Protocol [RTP]
• CPC Class Codes: H04N 21/8451 using Advanced Video Coding [AVC]

Abstract

A method for communicating video data on a wireless channel in a packet-switched network includes the steps of operating at a wireless terminal a compression in packets on the video data during a video coding operation, detecting wireless channel conditions and adapting control parameters of the video coding operation to the detected wireless channel conditions. The compression operation is a robust header compression operation and the step of adapting control parameters of said video coding operation is performed in dependence of information about the wireless channel conditions detected on a feedback channel made available in a decompression step associated with the compression operation.

Claims

1. A method for communicating video data on a channel in a packet-switched network comprising:

performing, by a terminal, compression of said video data in packets during a video encoding operation; and

detecting wireless channel conditions and configuring control parameters of said video encoding operation to said detected wireless channel conditions, wherein said encoded video data compression operation is a robust header compression operation and said configuring control parameters of said video encoding operation is performed as a function of information about said wireless channel conditions detected on a feedback channel made available in an encoded video data decompression operation associated with said encoded video data compression operation,

wherein said compression operation includes a second mode of operation in which a robust header compression acknowledge message is generated when a first of a sequence of R-0-CRC packets is correctly decompressed or when the first N packets of a sequence of UOR-2, IR or IR-DYN packets are successfully decompressed, said robust header acknowledge message carrying a sequence number of the packet that caused its generation, and said configuring the control parameters of the video coding operation comprises detecting packet loss by tracking the robust header compression acknowledge message inter-arrival rate and setting a timeout (T) depending from said inter-arrival rate parameters, said timeout (T) being set each time a robust header compression acknowledge message is received and said acknowledge message does not indicate a packet loss upon timeout expiration.